Brake shoe



June 51"),` 1934. w, H wlNTERs 1,961,184

BRAKE SHOE Filed NOV. 2, 1932 Q QA Q;

Q Q i @9' J 14 20T/@I2 1.5 15 @inventor 14 "xv )M/f. fm/fw Patented June 5, 1934 UNITED STATES PATENT OFFICE BRAKE SHOE Wilbur H. Winters, Larchmont, N. Y., assgnor to The American Brake Shoe and Foundry Company, Wilmington, Del., a corporation of Delaware Application November 2, 1932, Serial No. 640,834 1 Claim. (Cl. 18S- 254) This invention relates to improvements in brake shoes and more particularly to composition shoes comprising a composition body and a metal back which carries the body.

The object of the invention is to secure the back and the body together by permitting the body material to pass into and through openings in the back and button on the back during the molding process, and to arrange the buttons on that part of the back which is engaged by the brake head or other support so that they will not be damaged when the shoe is mounted thereon.

In the accompanying drawing illustrating a selected embodiment of the invention,

Fig. 1 is an elevation of a brake head with a. brake shoe mounted thereon and partly in secin the depressions 10 in the back not only protects them trom damage in mounting the shoe on the head and in the use of the shoe in service but it also enables the shoe to be held rigidly and snugly in contact with the head without interference by the buttons. Other openings may be provided in the back to permit additional buttons 16 to be formed if desired.

While it is contemplated that my invention will be used primarily in composition shoes, it may also be used in metal brake shoes to enable the key to hold the shoe tightly and rigidly in place on the head without interference from projecting buttons. As many openings may be provided in the back as required by different shoes and, while these openings are preferably circular, they may tion. be made in other shapes if desired. My inven- Fig. 2 is an elevation showing the back of the tion is adaptable for a great variety of shoes, both shoe. composition and metal, and to backs of different Fig. 3 is a sectional view on the line 3-3 of shapes and sizes, and I reserve the right to make Fig. 1- all such changes in the form, construction and Fig. 4 is an elevation of one side of a portion of arrangement of parts within the scope of the the shoe. following claim'.

Fig. 5 is a sectional view on the line 5-5 of I claim: Fig. 4. A brake shoe comprising a back, a body secured Referring to the drawing, 6 is a brake head and 7 is the key which secures the shoe on the head. rIhe shoe comprises a composition body 8 and a metal back 9 which may be made in any shape desired for different varieties and sizes of shoes. In the drawing I have shown a back stamped from sheet metal in a channel or shell form and the body 8 is molded therein. The back is provided with openings and the body material passes into and through these openings in the molding process and is buttoned on the outer side of the back to secure the body and the back together. These openings may be variously located in the back and, if any of the buttons engage the head 6, 4,0 they are liable to be broken oli" or otherwise damaged. To prevent this, I provide depressions 10 in the back between the attaching lug 11 and the end lugs l1 and locate the openings 12 in these depressions so that the body material may flow through the openings and form buttons 13 on the back and within the depressions below the outer surface of the back around the depressions. These depressions are spaced from the sides of the shoe and bearing surfaces 14 are provided at each side of each depression and between the attaching lug and the end lugs to engage the brake head. The brake head 6, as shown in Fig. 3, engages the opposite bearing surfaces 14 and bridges the intermediate depression 10 without engaging the buttons 13. This location of the buttons 13 on the back, an attaching lug intermediate the ends 0i the shoe and end lugs at the ends of the shoe, in combination with a brake head, and a key engaging the brake head and said attaching lug whereby the shoe is fastened to the brake head with the back of the shoe against the face of the head, said back having elongated depressions extending substantially from the attaching lug to the" end lugs and spaced from the sides of the shoe and openings in said depressions, and parts of the body extending through said openings and buttoned on the outer side of the back in said depressions, said buttons being located below the surface of those parts of the back at the sides of said depressions and said parts of the back forming bearing surfaces for the brake head whereby the buttons will be below the line of contact of the brake head with the back so that the shoe may be snugly and tightly keyed to the brake head with the buttons protected from engagement with the brake head.

WILBUR H. WINTERS. 

